flat line on recording side.

I’m trying to record form wave files from computer. After initial setup I record and only get a flat line in the recording. I have no way of adjusting the meters.
What can I do

Tell us the Windows version, the Audacity version, and what you’re trying to do. Record YouTube sound? Record your voice from a plugged in microphone?


The versions and computer are out of date, but you get the idea. You’re number three.


Or see http://manual.audacityteam.org/o/man/faq_recording_troubleshooting.html#flatline .